243623885328 has 200 divisors, whose sum is σ = 772342453080. Its totient is φ = 73795276800.

The previous prime is 243623885327. The next prime is 243623885333. The reversal of 243623885328 is 823588326342.

243623885328 is a `hidden beast` number, since 2 + 4 + 3 + 6 + 23 + 88 + 532 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 101093474304 + 142530411024 = 317952^2 + 377532^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (243623885327) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 448278 + ... + 829578.

Almost surely, 2^243623885328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243623885328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386171226540).

243623885328 is an abundant number, since it is smaller than the sum of its proper divisors (528718567752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243623885328 is a wasteful number, since it uses less digits than its factorization.

243623885328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381367 (or 381352 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 54.

The spelling of 243623885328 in words is "two hundred forty-three billion, six hundred twenty-three million, eight hundred eighty-five thousand, three hundred twenty-eight".